Michael Portillo's East Anglian coastal railway journey takes him to the treacherous waters off the Norfolk coast, which have sunk many ships and cost many lives. Michael meets a diving duo who set out to find the wreck of a ship carrying a future king, which sank 340 years ago. Michael visits the most easterly town in Britain, Lowestoft. It's the southern gateway to the network of lakes and rivers known as the Broads and home to the International Boat Building Training College. At Lound Lakes, Michael joins the warden of the Suffolk Wildlife Trust's 280-acre nature reserve, which is teeming with wildlife, including kingfishers, otters, breeding warblers and 28 species of butterfly. From the holiday resort of Great Yarmouth, built on a sandbank which in Roman times lay under the sea, Michael makes his way to the enormous and impressive Burgh Castle Roman Fort.